FTP is very standard, and IE supports FTP too (though why use a web browser for FTP work, when there are perfectly capable clients available, as you've seen already where it works flawlessly in Filezilla client).
What are your procedures when using IE?
Normal way: use address bar or favorites in IE with this address:

this is an area we share for one of our clients to access. they have requested direct access via internet explorer so they don't have to have the filezilla client installed for anyone who may need to access it.

personally, I would use the FTP client, but as they are our valued client and have requested this, I was hoping to be able to provide it for them.

We have made the changes to the filezilla server and redirected ports to the local IP address of our server. We have only opened up 10 ports so far, as we have to add each port to NAT manually. ie we cant add a range.

We still cannot connect, and here is the server log on our attempted connection :-

I reset the password for this user in the admin console, and I enter the password manually into the login box within IE.

I notice that the password is only indicated as being incorrect for the anonymous login, and the rest are accepted.

I dont recall setting up any security for an anonymous login, so am a little confused as to what I need to do.

Are you suggesting I rest the user password again for this user, and is there a different method I need to apply to reset the browser login? As I said, when the login box appears in IE, the username and password are balnk, and I enter them manually each time.

Do I need to configure the anonymous user somehow within the filezilla admin console?

I'd almost suspect there's something wrong with the computer you're testing with. Can you use another computer or laptop?
Usually there should be a automatic LIST command in IE after a successful connect.

Since I have made changes to our filezilla admin console, I can no longer connect using a local copy of the filezilla client. I have tried using a specific port 21000 for example, but it still will not work.

I did not have any problems with local traffic, but could do with assistance to get local access re instated.

I have also opened up the ports 21000 to 21100 on the windows server firewall for TCP and I also tried UDP, but this has not helped.

Just to be sure, I will attach a screenshot. With these setting, your server shouldn't have any problems on LAN connections at all (all my servers are like this, working both externally and internally)
These are actually the default settings (but with custom ports unchecked, it only means these will be chosen random).ftp-passive.png

Firewall, I said, temporarily disable the firewall on the server. You mentioned using Windows Firewall (the default firewall of windows), so just disable it for a minute, test FTP on LAN, and when it works, you know you have to check the firewall settings. If it still doesn't work, the problem is somewhere else.

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